@book{UBHD-2629155, author={Kallen, Gerhard}, title={Friedrich Barbarossa}, publisher={Gutenberg-Verl.}, address={K{\"o}ln}, year={1943}, pages={32 S.}, language={ger}, number={ARRAY(0x55c2a83a5700)}, series={K{\"o}lner Universit{\"a}tsreden / Universit{\"a}t K{\"o}ln}, keywords={Friedrich <I., Heiliges R{\"o}misches Reich, Kaiser>}, library={UB [Signatur: F 1887-7::41-46, 48] ; GE [Signatur: Dh 709]}, }